Disgruntled customer

I purchased an item online 3 months ago due to lockdown I decided to do online shopping rather than to visit the malls. Upon receiving my items, I was sent the incorrect item. I contacted Game via telephone as well as email with no response. I eventually got hold of an agent and explained my situation. They did an investigation only to discover the item advertised was incorrect due to pricing. I then asked that I be given the item as this was not my error as I purchased what was advertised. We went back and forth with the matter for the past 3 months, to get to the solution. 1.i was told the item was out of stock and would I be willing to wait which I rep**** yes. On a continuous basis I was kept update regarding the stock. A few weeks ago the same item which are pots by the way was advertised online again for R100 more, I contacted via email asking when I would receive my order as I see it's being advertised again, only to discover it was another error on their side and they removed the item online again. Up until the 11th August I was told they are still searching for the item and as soon as they get they will dispatch it to me or I will collect at the nearest store. On Tuesday again the agent with the outcome from the complaints department that the item should be given to me, to which the agent was to call the store to find out if they have and would have called me later on that day which was the 25th August. She never called. Today the 28th I receive an email from another agent plainly saying they would refund me and apologized for the error online, this after 3 months of going back and forth no other solution or outcome after I have been so patient throughout this whole episode.. I'm definitely not happy, I even suggested that they give me something similar to what was advertised. Game stores have no sense of customer service at all, who can I forward this complaint as the complaints department is of no help at all